ATMEGA644P-20PU

The ATmega164P/V/324P/V/644P/V is a low power, CMOS 8-bit microcontrollers based on the AVR enhanced RISC architecture. The ATmega164P/V/324P/V/644P/V is a 40/44-pins device ranging from 16 KB to 64 KB Flash, with 1 KB to 4 KB SRAM, 512 Bytes to 2 KB EEPROM. By executing instructions in a single clock cycle, the devices achieve CPU throughput approaching one million instructions per second (MIPS) per megahertz, allowing the system designer to optimize power consumption versus processing speed.

Key features

• High-performance, Low-power AVR 8-bit Microcontroller
• Advanced RISC Architecture
• 131 Powerful Instructions – Most Single-clock Cycle Execution
• 32 General Purpose Working Registers
• Fully Static Operation
• Up to 20 MIPS Throughput at 20 MHz
• On-chip 2-cycle Multiplier
• High Endurance Non-volatile Memory segments
• 16K/32K/64K Bytes of In-System Self-programmable Flash program memory
• 512B/1K/2K Bytes EEPROM
• 1K/2K/4K Bytes Internal SRAM
• Write/Erase Cycles: 10,000 Flash/ 100,000 EEPROM
• Data retention: 20 years at 85℃/100 years at 25℃
• Optional Boot Code Section with Independent Lock Bits
• In-System Programming by On-chip Boot Program
• True Read-While-Write Operation
• Programming Lock for Software Security
• JTAG (IEEE std. 1149.1 Compliant) Interface
• Boundary-scan Capabilities According to the JTAG Standard
• Extensive On-chip Debug Support
• Programming of Flash, EEPROM, Fuses, and Lock Bits through the JTAG Interface
• Peripheral Features
• Two 8-bit Timer/Counters with Separate Prescalers and Compare Modes
• One 16-bit Timer/Counter with Separate Prescaler, Compare Mode, and Capture Mode
• Real Time Counter with Separate Oscillator
• Six PWM Channels
• 8-channel, 10-bit ADC
• Differential mode with selectable gain at 1x, 10x or 200x
• Byte-oriented Two-wire Serial Interface
• Two Programmable Serial USART
• Master/Slave SPI Serial Interface
• Programmable Watchdog Timer with Separate On-chip Oscillator
• On-chip Analog Comparator Interrupt and Wake-up on Pin Change
• Special Microcontroller Features
• Power-on Reset and Programmable Brown-out Detection
• Internal Calibrated RC Oscillator
• External and Internal Interrupt Sources
• Six Sleep Modes: Idle, ADC Noise Reduction, Power-save, Power-down, Standby and Extended Standby
• I/O and Packages
• 32 Programmable I/O Lines
• 40-pin PDIP, 44-lead TQFP, 44-pad VQFN/QFN/MLF (ATmega164P/324P/644P)
• 44-pad DRQFN (ATmega164P)
• Operating Voltages
• 1.8V - 5.5V for ATmega164PV/324PV/644PV
• 2.7V - 5.5V for ATmega164P/324P/644P
• Speed Grades
• ATmega164PV/324PV/644PV: 0 - 4 MHz @ 1.8V - 5.5V, 0 - 10 MHz @ 2.7V - 5.5V
• ATmega164P/324P/644P: 0 - 10 MHz @ 2.7V - 5.5V, 0 - 20 MHz @ 4.5V - 5.5V
• Power Consumption at 1 MHz, 1.8V, 25℃ for ATmega164PV/324PV/644PV
• Active: 0.4 mA
• Power-down Mode: 0.1 μA
• Power-save Mode: 0.6 μA (Including 32 kHz RTC)